| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO SE SI SK TR |
| (71) |
Applicants: |
|
- Schlumberger Technology B.V.
2514 JG The Hague (NL)
BG CZ DE DK GB GR HU IE IT LT NO PL RO SI SK TR
- Schlumberger Holdings Limited
Tortola (VG)
GB NL
- Services Pétroliers Schlumberger
75007 Paris (FR)
FR
- Prad Research And Development Limited
Tortola (VG)
AT BE CH CY EE ES FI HR IS LI LU LV MC MK MT PT SE
|
|
| (72) |
Inventors: |
|
- JOHNSON, Ashley
Cambridgeshire CB24 6DG (GB)
- ALDRED, Walter
Hertfordshire SG8 7RJ (GB)
- DOWNTON, Geoffrey
Minchinhampton, Gloucestershire GL6 9BY (GB)
- BOUALLEG, Riadh
Cambridge CB4 2UP (GB)
- HAUGVALDSTAD, Kjell
N-7125 Vanvikan (NO)
- SHEPPARD, Michael
Cambridgeshire CB21 4NU (GB)
|
| (74) |
Representative: Ford, Michael Frederick |
|
Schlumberger Cambridge Research Limited
High Cross
Madingley Road
Cambridge CB3 0EL
Cambridge CB3 0EL (GB) |
|
